Why is it against the law for a man living in Delhi to be buried in Mumbai?

Replace the question mark with the correct number in the below-given picture?

Riddle me this, Riddle me that,
What am I? I am made of wood, but you can't see me down?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

How many miles does the pigeon travel?

Can you move two match sticks to make it 430?

Name a key which is hardest to turn.

Can you spot the hidden girl in the picture below?

By using 'because' continuously three times, can you make an English statement ?

What famous saying does this rebus mean?

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